JPH06200450A - Preparatory apparatus for weaving in loom beam - Google Patents

Abstract

PURPOSE:To provide an apparatus capable of carrying out an automatic preparatory operation for weaving work, i.e., automatic separation of warp yarns wound around a loom beam into individual yarns without fail. CONSTITUTION:This apparatus is equipped with a loom beam 12 around which plural warp yarn sheets 14 each separated into an individual group are wound, with many support frames 20 for supporting the end part of a warp yarn sheet 14 unwound from the loom beam 12 and with a hook member 42 capable of going back and forth in the direction of the warp yarns supported by the support frames. The hook member is supported to a mobile carrier capable of moving in the direction of the width of the warp yarn sheets supported by the support frames.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for performing a preparatory work for weaving prior to weaving a woven fabric on a loom, and in particular, a warp sheet wound from a beam of a loom to one warp yarn. The present invention relates to a device for automatically separating and taking out each.

[0002]

2. Description of the Related Art In the weaving preparation work, a large number of warp yarns, which may exceed 10,000 yarns wound on a beam of a loom, are sequentially drawn out one by one and fixed to the loom, or a reed or a heald forming an essential part of the loom. It is a work to insert into. The work of separating and taking out the yarns one by one from a large number of warp yarns is a fine work that requires patience, and has been conventionally performed by a relatively young worker who is skilled. However, the number of warp yarns has increased significantly due to the recent trend of increasing the width of fabrics.
Since the shortage of young workers is eliminated, there is an increasing demand for equipment that automates this.

However, when the weaving preparation work is attempted to be automated, it is not easy to separate the warps wound around the beam of the loom from each other because the distance between them is short. The work has become more difficult because the distance between the warps has been further reduced due to the recent trend of increasing the number of warps.

On the other hand, in a so-called warp machine, which is a machine for gluing warp yarns unwound from a warp beam, drying them and winding them around a loom beam, so-called warp machines cause insufficient adhesion of glues and adhesion between warp yarns as the distance between warp yarns decreases. In order to solve the problem that the warp occurs, it has been proposed to increase the workability by using a plurality of warp sheets to increase the distance between adjacent warp yarns (for example, JP-B-61-43454 and JP-A-64). -45840, JP-A-4-73234, etc.).

[0005]

However, in the conventional warping machine, the sizing process and the drying process are performed by dividing the warp sheet into a plurality of warp sheets in order to increase the distance between the warp yarns. After finishing, the warp sheet for each warp beam was wound up together at the stage of being wound around the loom beam, and there was no consideration for improving the workability of the preparatory work.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above problems and provides an apparatus for automatically performing a weaving preparation work, in which a plurality of warp sheets are wound as separate groups. A loom beam and a number of support frames that support the ends of the warp sheets unwound from the loom beam, and
It is characterized in that it is provided with a hook member that advances and retreats toward the warp supported by the support frame, and that the hook member is supported by a movable base that is movable in the width direction of the warp sheet supported by the support frame.

[0007]

The warp sheet unwound from the loom beam is supported by the support frame for each unit wound around the warp beam, and the lower end of the warp sheet is pulled downward by the tensioning means to give loose tension. . Each of the supporting frames transfers the warp supported by the supporting frame to a position in which the warp is sequentially projected with respect to the warp supported by another supporting frame. Then, the hook member advances toward the position of the projecting warp, hooks the projecting warp, and retracts.

When the warp threads have been removed from all the support frames one by one, each support member repeats the above operation.
If a negative pressure type is used as a means for giving tension to the warp, the end of the warp is only attracted to the support frame by negative pressure and tensioned, and it is not particularly fixed, so if it is pulled by the hook member, It is pulled out without resistance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, 10 is a weaving preparation device for carrying out the present invention. Reference numeral 11 denotes a base 11 that constitutes the weaving preparation device 10, and a pair of two support rollers 13 and 13 for supporting the loom beam 12 are provided on the base 11. The loom beam 12 has several, in this example, ten warp sheets 14 wound around it, and the warp sheets 14 unwound therefrom, that is, the ends of a large number of warp threads 15 arranged in a plane. Is hung from the support frame 20 downward, and is gently pulled downward by the tensioning means 30 to be tensioned. Reference numeral 40 denotes a scraping means for removing the end portion of the warp yarn 15 supported by the support frame 20 from the tensioning means 30.

The end portion of the warp sheet 14 unwound from the loom beam 12 is temporarily pulled upward by the deflecting roller 17 supported by the free end of the upper tension arm 16 and then turned downward, so that each warp sheet 14 is moved upward. The ends that are separated and arranged on the support frame 20 and hang downward from the support frame 20 are loosely coupled to the tensioning means 30. Even if the unraveling speed of the loom beam 12 is uneven, the tension arm 16 rotates downward in the counterclockwise direction to loosen the tension so that the tension applied to the warp sheet 14 does not change significantly. When the tension is reduced, a spring (not shown) rotates upward to increase the tension.

The supporting frame 20 has the same number of ten as the warp sheets 14.
Pairs are provided side by side, and one support frame 20 is assigned to one warp sheet 14. The support frame 20 is shown in FIGS.
As shown in, a rod-shaped upper member 21 formed by extruding an aluminum alloy is arranged in a direction orthogonal to the paper surface, and a guide member 22 extending in the vertical direction is connected below the upper member 21. A tensioning means 30 is provided below it. Then, one warp sheet 14 directed downward by the turning roller 17 is supported by one support frame 20.

The support of the warp sheet 14 by the support frame 20 is performed as follows. That is, the warp yarns 15 that form the warp yarn sheet 14 are arranged along the upper surface of the upper member 21 and are hung down one by one from there. The lower end of the warp 15 is a tensioning means 30, and in this embodiment, a negative pressure suction type tensioning means 3.
By 0, it is pulled downward with a predetermined suction force. The tensioning means 30 is not limited to this, and can be loosely coupled to the weight via a sponge like a conventional tensioning device.

Negative pressure suction type tension means 3 according to this embodiment
As shown in FIG. 4, 0 is provided with a negative pressure chamber 31 connected to the negative pressure source, and the negative pressure chamber 31 is provided with a through hole 32 communicating with the guide member 22 of the warp yarn 15, and as a result, the through hole 32 is always provided. Through this, an airflow communicating from the inside of the guide member 22 to the negative pressure chamber 31 is generated. Therefore, the warp yarn 1 hung in the guide member 22
The end of 5 is sucked into the negative pressure chamber 31, and an appropriate tension is given by the friction with the air flow from the inside of the guide member 22 toward the negative pressure chamber 31, and the tensioned state is maintained. As shown, the guide member 22 includes a pillar portion 23 and a lid member 24 that covers the pillar portion 23,
A groove forming a passage for the warp yarn 15 is formed in any of them, and when they are overlapped with each other, the through hole 32 is formed between them. Reference numeral 25 is a brush-like sealing member that loosely seals between the negative pressure chamber 31 and the guide member 22.

Reference numeral 40 denotes a scraping means for pulling out the warp threads 15 which are supported by being tensioned in the longitudinal direction by the support frame 20 one by one. The scraping means 40 has a moving base 41 supported on the base 11, a carriage 46 and a hook member 42 supported on the moving base 41. Hook member 42
Has a hook at its tip and advances to the side of the support frame 20 arranged in a large number to hook one of the warp threads 15 and withdraws the warp thread 15 with it, so that the warp threads 15 can be pulled out one by one. Has become.

Reference numeral 50 is a twilling means for twilling and bundling the ends of the warp yarns 15 scraped off by the hook members 42. As shown in FIG. 2, the traverse means 50 has a weft thread 5
It is provided with two lifting rings 52, 52 that support 1, 51. The raising and lowering rings 52, 52 are connected to two racks 39 facing each other, and the raising and lowering is switched by rotating the rotation direction of the gear 37 meshed with the racks 39. A pair of upper and lower front rollers 53 are provided on the front side of the lifting ring 52, and a rear roller 54 is independently provided on the rear side, and the hook member 42 moves back and forth between them to move back and forth. , Guide the warp 15. Thus, every other weft yarn 51 is vertically passed through the warp yarns 15 arranged in this direction to prevent excessive separation and agglomeration. Reference numeral 56 is an optical sensor for checking the scraped state of the warp.

The operation of the support frame 20 will now be described. The support frame 20 is supported on the base 11 so as to be able to reciprocate in the direction perpendicular to the paper surface in FIG. 1, and is intermittently moved in the direction of the hook member 42 by a considerable amount (about 5 mm) by a pulse motor (not shown). It is designed to move forward and backward. The moving base 41 that supports the hook member 42 is supported on the base 11 so as to be movable in the direction perpendicular to the paper surface of FIG. The moving base 41 is intermittently driven by a motor 44. A rack and pinion type transmission mechanism 45 connects the motor 44 and the moving base 41. The hook member 42 and the carriage 46 are reciprocally driven by another electric motor 48 via a lever crank type reciprocating mechanism 47. Reference numeral 49 denotes a speed reducer for driving the reciprocating mechanism 47, which is driven by the electric motor 48 via the toothed belt 38.

Next, the operation of this embodiment will be described. First, the loom beam 12 is placed on the support roller 13 on the base 11, the warp sheet 14 is unwound, hung on the turning roller 17, and then hung downward from the warp sheet 14 to be lined up on the support frame 20. Then, the warp sheet 1 is hung down along the pillar portion 23 forming the guide member 22 and is combed by a not-shown comb.
The end portions of 4 are unfolded and aligned, and the lid member 24 is covered. In this state, when the air in the negative pressure chamber 31 forming the tensioning means 30 is evacuated to reduce the pressure, the air flows into the negative pressure chamber through the through hole 32, and the end portion of the warp 15 is pulled by the air flow and the end portion of the warp yarn 15 is guided.
2 is pulled downward to form a tension state.

At the initial position where the warp threads are tensioned, as shown in FIG. 6, the warp threads on the side of the hook member 42 supported by the ten support frames 20 are aligned on the line indicated by H. When the operation is started, first, the moving base 41 that supports the hook member 42.
Is stopped, any 1 of the 10 support frames 20
When one of the support frames 20 is projected toward the hook member 42 by a predetermined amount (about 5 mm in this embodiment) by the pulse motor (the third support frame 20 is projected in the example of FIG. 6), the projections are made. Only one warp yarn 15 supported by the support frame 20 has a position projecting from other warp yarns indicated by F in the drawing. Then, the hook member 42 forming the scraping means 40 advances and hooks with respect to the protruding warp 15 and retracts. While the hook member 42 is retracting, the support frame 20 from which the warp 15 has been pulled out retreats to a position where the outermost end of the remaining warp 15 is aligned with the line indicated by H (not the initial position). To do. That is, the warp yarns 15 and 1
Move backward by the amount reduced by the distance between 5. Then, similarly, the next supporting frame 20 projects by a predetermined amount and the warp 15
It is held at the protruding position indicated by.

In this way, the ten support frames 20 are successively formed.
From this, a predetermined number of warp threads 15 of 100 to 200 are pulled out. Then, when the support frame 20 reaches a position that protrudes in the direction perpendicular to the paper surface by about 250 mm from the start of the operation, the lateral movement of the support frame 20 with respect to the turning roller 17 becomes large, so that the warp sheet reaching there becomes inclined. Therefore, the above operation is stopped, all the support frames 20 are moved by 250 mm in the depth direction of the paper surface by a pulse motor (not shown), and are returned to the same positions as when the operation was started. At the same time, the scraping means 40 is also moved in the same direction as the support frame 20 by the motor 44, and is moved about 250 mm in the depth direction of the paper from the position at the start of operation. After these movements, the support frame 20 and the scraping means 40 perform the above operation. By repeating these processes several times, the work is completed when all the warp yarns are pulled out by the hook member 42.

[0020]

As described above, according to the present invention, the ends of the warp yarns 15 are sequentially extracted from the plurality of warp yarn sheets 14 supported by the support frame 20, and therefore the loom beam having a wide weaving width is automatically provided. In addition, there is an effect that the end portion of the warp can be pulled out without error and the workability of the weaving preparation work can be significantly improved.

[Brief description of drawings]

FIG. 1 is a side view showing the principle of an apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of the main part.

FIG. 3 is a partially cutaway side view showing an enlarged main part thereof.

FIG. 4 is a partially cutaway side view showing another main portion in an enlarged manner.

FIG. 5 is a partially cutaway side view showing another main part in an enlarged manner.

FIG. 6 is a sectional view taken along line VI-VI in FIG.

[Explanation of symbols]

 12 Loom beam 20 Support frame 30 Tensioning means 40 Scraping means

Claims (3)

[Claims] 1. A loom beam in which a plurality of warp sheets are wound as separate groups, a large number of support frames for supporting the ends of the warp sheets unwound from the loom beam, and a support frame supported by the support frames. A weaving preparation device for a loom beam, comprising: a hook member that moves forward and backward toward the warp yarn, and the hook member is supported by a movable base that is movable in the width direction of the warp sheet supported by the support frame. 2. The support frame according to claim 1, wherein each of the support frames is movably supported to a position projecting from another support frame, and the hook member is directed toward a warp located at an end of the projecting support frame. Weaving preparation device for a loom beam configured to move forward and backward. 3. The weaving preparation device for a loom beam according to claim 1, wherein the tension member forming a part of the support frame has a suction port leading to a negative pressure source.